"Marchers hold up a their cellular phones to record the rapper Common and singer song writer, John Legend preform at the foot of the Edmund Pettus Bridge in honor of Martin Luther King Jr., Sunday, Jan. 18, 2015, in Selma, Ala. Several celebrities such as Oprah Winfrey, John Legend, Common, and David Oyelowo lock arms and march to promote the movie ""Selma.""(AP Photo/Brynn Anderson)"